`sqrt(18/13)`
Simplify the expression.

Since there is a radical expression at the bottom, we need to rationalize the denominator.In rationalizing the denominator, we multiply the top and bottom by what we have on the denominator. `(sqrt(18)*sqrt(13))/(sqrt(13)*sqrt(13)) = (sqrt(18)*(sqrt(13))/(sqrt(13*13)) = ((sqrt(18)*sqrt(13))/(sqrt(169)))`

Take note that` 13 * 13 = 169` , hence` sqrt(169) = 13` .

We will have: `(sqrt(18)*sqrt(13))/13` .We can no longer simplify the `sqrt(13)` , for the `sqrt(18)` , we will think of a perfect square number that is a factor of `18` .